RE: [Sheflug] SuSE 7.3 Network Problems

[Alex Hudson <xxxxx [at] xxxxxxxxxxxxxx>]

On Sat, 2001-12-15 at 11:56, Alistair Williamson wrote:
> 11:38:40.016517 192.168.0.1.32768 > 192.168.0.295.137:
> >>>NBT UDP PACKET(137): QUERY;REQUEST;BROADCAST (DF)

Hmm. An impossible packet; but I'll put that down to a typo ;) That's
Samba trying to see who else in on the network, nothing to worry about.
You may want to stop all your network services while you're trying to
debug this problem though - it'll give you less noise when you're
logging.

> 11:39:19.136704 arp who-has 192.168.0.5 tell 192.168.0.1

Ah :( Remember when I said 'but I'd be very surprised if..' ??

Basically, your network is not functioning at even the lowest level, it
appears. 

First, run tcpdump on your laptop at the same time. Ping both ways. It
might be that your network isn't (for whatever reason) able to transmit
or receive. If your laptop doesn't see the arp requests, then the faulty
machine is not transmitting. If your laptop doesn't get arp replies (an
'is at' packet) then neither transmit or receive is going. 

Also, looking at the arp cache after pinging would be useful - just run
'arp' as root on both the desktop and the laptop, and see if either of
them can see each other. 

Could you also give us the full 'ifconfig eth0' output from the faulty
machine? Also, do you have any odd network devices listed in 'ifconfig
-a', like tunl0, gre0, etc?

Cheers,

Alex.


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